EP 2460775 A1 20120606 - Method of manufacturing vitreous silica crucible
Title (en)
Method of manufacturing vitreous silica crucible
Title (de)
Verfahren zur Herstellung eines Quarzglastiegels
Title (fr)
Procédé de fabrication d'un creuset en verre de silice
Publication
Application
Priority
JP 2010268154 A 20101201
Abstract (en)
The present invention provides a method of manufacturing a vitreous silica crucible (1) having a transparent layer by use of waste vitreous silica. According to the present invention, there is provided a method of manufacturing a vitreous silica crucible (1) for manufacturing a monocrystalline or polycrystalline silicon ingot, including a process of vitrifying a silica powder sintered body (3) having a crucible shape in the whole or part of the thickness direction by arc fusing the silica powder sintered body (3) from the inner surface side, wherein the method further includes at least one means of (1) depressurizing the silica powder sintered body (3) from the outer surface side during the arc fusing, and (2) forming a synthetic vitreous silica layer (13) on the inner surface by spraying synthetic silica powder onto the inner surface of the silica powder sintered body (3) during the arc fusing.
IPC 8 full level
C03B 19/09 (2006.01); B32B 1/00 (2024.01); C03B 19/06 (2006.01); C30B 35/00 (2006.01)
CPC (source: EP KR US)
C03B 19/066 (2013.01 - EP US); C03B 19/095 (2013.01 - EP US); C03B 20/00 (2013.01 - KR); C30B 11/002 (2013.01 - EP US); C30B 15/10 (2013.01 - EP KR US); C30B 29/06 (2013.01 - KR); Y10T 428/131 (2015.01 - EP US); Y10T 428/1314 (2015.01 - EP US); Y10T 428/1317 (2015.01 - EP US)
Citation (applicant)
- JP 2000344535 A 20001212 - USHIO ELECTRIC INC
- JP 2004131317 A 20040430 - JAPAN SUPER QUARTS CORP
- JP H08283065 A 19961029 - NEC CORP
Citation (search report)
- [XYI] EP 0463543 A1 19920102 - SHINETSU QUARTZ PROD [JP]
- [XY] JP 2006273666 A 20061012 - KYOCERA CORP
- [X] DE 4440104 A1 19950518 - HERAEUS QUARZGLAS [DE]
- [X] US 2004118158 A1 20040624 - SCHWERTFEGER FRITZ [DE], et al
- [XA] US 2007051297 A1 20070308 - KEMMOCHI KATSUHIKO [US], et al
- [A] US 6136092 A 20001024 - SATO TATSUHIRO [JP], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2460775 A1 20120606; EP 2460775 B1 20140730; CN 102531344 A 20120704; CN 102531344 B 20150408; JP 2012116710 A 20120621; JP 5605902 B2 20141015; KR 101409283 B1 20140618; KR 20120060157 A 20120611; TW 201223892 A 20120616; TW I436955 B 20140511; US 2012141704 A1 20120607; US 9469560 B2 20161018
DOCDB simple family (application)
EP 11191119 A 20111129; CN 201110404846 A 20111201; JP 2010268154 A 20101201; KR 20110126200 A 20111129; TW 100144236 A 20111201; US 201113307316 A 20111130